JERUSALEM, Jan 6 (Reuters) - White House national security adviser John Bolton added a new condition on Sunday to the U.S. withdrawal from Syria, saying Turkey must agree to protect the United States' Kurdish allies.
President Donald Trump's abrupt decision to announce a U.S. pullout from Syria left many questions open, chiefly whether Kurdish fighters who had been operating in northern Syria alongside U.S. forces would now be attacked by their long-time enemy, Turkey.
Bolton, on a trip to Israel and Turkey, said he would stress in talks with Turkish officials, including President Tayyip Erdogan, that Kurdish forces must be protected.
Ahead of talks with Israeli officials, he told reporters the pullout would be done in a way that guaranteed the Islamic State jihadist group "is defeated and is not able to revive itself and become a threat again."
White House National Security Advisor John Bolton
White House National Security Advisor John Bolton
John Bolton, national security advisor, speaks during a White House press briefing in Washington, D.C., U.S., on Thursday, Aug. 2, 2018. Russian efforts to interfere in upcoming U.S. midterm elections have yet to reach the intensity of the Kremlin's campaign to disrupt the 2016 presidential vote, but they're only 'a keyboard click away' from a more serious attack, Director of National Intelligenceï¿½Dan Coatsï¿½said. Photographer: Zach Gibson/Bloomberg via Getty Images
OXON HILL, MD, UNITED STATES - 2018/02/22: John Bolton, Former United States Ambassador to the United Nations, at the Conservative Political Action Conference (CPAC) sponsored by the American Conservative Union held at the Gaylord National Resort & Convention Center in Oxon Hill. (Photo by Michael Brochstein/SOPA Images/LightRocket via Getty Images)
WASHINGTON, DC - NOVEMBER 08: US Ambassador to United Nations John Bolton speaks at the National Oversight and Government Reform Committee on moving the U.S. Embassy in Israel to Jerusalem on Capitol Hill on November 8, 2017 in Washington, DC. (Photo by Tasos Katopodis/Getty Images)
Former US Ambassador to the United Nations John Bolton speaks during the American Conservative Union Conference March 6, 2014 in National Harbor, Maryland. The annual conference is a meeting of politically conservatives Americans. AFP PHOTO/Brendan SMIALOWSKI (Photo credit should read BRENDAN SMIALOWSKI/AFP/Getty Images)
NASHUA, NH - APRIL 17: Former Ambassador to the United Nations John Bolton speaks at the First in the Nation Republican Leadership Summit April 17, 2015 in Nashua, New Hampshire. The Summit brought together local and national Republicans and was attended by all the Republicans candidates as well as those eyeing a run for the nomination. (Photo by Darren McCollester/Getty Images)
LAS VEGAS, NV - MARCH 29: Former United States ambassador to the United Nations John Bolton speaks during the Republican Jewish Coalition spring leadership meeting at The Venetian Las Vegas on March 29, 2014 in Las Vegas, Nevada. The Republican Jewish Coalition began its annual meeting with potential Republican presidential candidates in attendance, along with Republican super donor Sheldon Adelson. (Photo by Ethan Miller/Getty Images)
DES MOINES, IA - JANUARY 24: Former Ambassador to the United Nations John Bolton speaks to guests at the Iowa Freedom Summit on January 24, 2015 in Des Moines, Iowa. The summit is hosting a group of potential 2016 Republican presidential candidates to discuss core conservative principles ahead of the January 2016 Iowa Caucuses. (Photo by Scott Olson/Getty Images)
WASHINGTON - DECEMBER 4: US President George W. Bush (R) and Ambassador to the UN John Bolton (L) meet in the Oval Office of the White House December 4, 2006 in Washington, DC. Bush accepted Bolton's resignation as Ambassador to the United Nations when his term is up in January 2007. (Photo by Brendan Smialowski/Getty Images)
HOUSTON, TX - MAY 03: Former U.S. ambassador to the United Nations John Bolton speaks during the 2013 NRA Annual Meeting and Exhibits at the George R. Brown Convention Center on May 3, 2013 in Houston, Texas. More than 70,000 peope are expected to attend the NRA's 3-day annual meeting that features nearly 550 exhibitors, gun trade show and a political rally. The Show runs from May 3-5. (Photo by Justin Sullivan/Getty Images)
John Bolton, former US ambassador to the United Nations (R) and Aaron Abramovitch, Director-General of Israeli Ministry of Foreign Affairs attend a panel during the eighth annual Herzliya Conference in Herzliya, 22 January 2008. The eight annual Herzliya Conference, entitled Balance of Israel's National Security, and coordinated by the Institute for Policy and Strategy at the Interdisciplinary Center Herzliya's Lauder School of Government, started yesterday and lasts for 3 days. The theme for this year's conference is 'Israel at 60: Tests of Endurance.' AFP PHOTO/JACK GUEZ (Photo credit should read JACK GUEZ/AFP/Getty Images)
NEW YORK - OCTOBER 14: U.S. Ambassador to the United Nations John Bolton addresses the Security Council after it unanimously voted in favor of the resolution for sanctions against North Korea at the United Nations headquarters October 14, 2006 in New York City. The council voted unanimously to approve the resolution which demands that North Korea destroy all of its nuclear weapons and bans the import and export of materials used for the creation of weapons of mass destruction. (Photo by Stephen Chernin/Getty Images)
(FILES) A file picture dated 10 October 2006 shows former US ambassador to the United Nations John Bolton speaking to the media after a meeting of the five permanent members of the Security Council (Britain, China, France, Russia and United States) plus Japan, where they discussed a resolution on the North Korea nuclear situation at the UN headquarters in New York. Bolton said 21 January 2008 that Israel may have to take military action to prevent its archfoe Iran from acquiring an atomic bomb. Bolton also said that further UN sanctions against the Islamic republic will be ineffective in stopping Iran's controversial nuclear programme which Israel and the US believe is aimed at developing a bomb -- a claim denied by Tehran. AFP PHOTO/Stan HONDA (Photo credit should read STAN HONDA/AFP/Getty Images)
UNITED NATIONS, UNITED NATIONS: John Bolton (C), United States Ambassador to the United Nations, speaks to the media 13 October 2006 before a Security Council meeting about Georgia, to be followed by discussions on the North Korea resolution at UN headquarters in New York. The UN Security Council on Friday was set to consider a compromise draft resolution mandating wide-ranging sanctions against North Korea over its declared nuclear test but specifically ruling out the use of force. AFP PHOTO/Stan HONDA (Photo credit should read STAN HONDA/AFP/Getty Images)
NEW YORK - NOVEMBER 13: John Bolton, U.S. ambassador to the United Nations, speaks to the media after a meeting with the five permanent members of the Security Council and Germany concerning Iran at the French Mission to the UN November 13, 2006 in New York City. Bolton received a controversial recess appointment to the post by President Bush in August 2005 and was renominated last week, but would face confirmation from a new Democrat-controlled Senate if not voted on by the current Congress' recess in January. Democrats oppose the nomination. (Photo by Michael Nagle/Getty Images)
White House National Security Advisor John Bolton, U.S. Director of National Intelligence Dan Coats, FBI Director Christopher Wray, arrive to attend a briefing on election security in the White House press briefing room at the White House in Washington, U.S., August 2, 2018. REUTERS/Carlos Barria
U.S. National Security Adviser John Bolton attends a news conference in Moscow, Russia June 27, 2018. REUTERS/Sergei Karpukhin
HELSINKI, FINLAND JULY 16, 2018: US Ambassador to Russia Jon Huntsman Jr (C) and US National Security Adviser John Bolton (R) talking as Russian President Vladimir Putin and US President Donald Trump meet at the Presidential Palace. Alexei Nikolsky/Russian Presidential Press and Information Office/TASS (Photo by Alexei Nikolsky\TASS via Getty Images)
WASHINGTON, DC - AUGUST 02: National Security Advisor John Bolton, briefs the media on election interference, at the White House, on August 2, 2018 in Washington, DC. The administration's top security officials briefed the media on election interference. (Photo by Mark Wilson/Getty Images)
National Security Advisor John Bolton (R) attends a joint press conference of the US and Russian Presidents after a meeting at the Presidential Palace in Helsinki, on July 16, 2018. - The US and Russian leaders opened an historic summit in Helsinki, with Donald Trump promising an 'extraordinary relationship' and Vladimir Putin saying it was high time to thrash out disputes around the world. (Photo by Brendan SMIALOWSKI / AFP) (Photo credit should read BRENDAN SMIALOWSKI/AFP/Getty Images)
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And it would be carried out in such a way as to "make sure that the defense of Israel and our other friends in the region is absolutely assured, and to take care of those who have fought with us against ISIS and other terrorist groups."
Asked whether a U.S. withdrawal would not take place in Syria until Turkey guaranteed the Kurdish fighters would be safe, Bolton said: "Basically, that's right."
The Syrian YPG militia has been highly effective in the war against Islamic State, a part of the wider Syrian conflict pitting a range of insurgent groups against President Bashar al-Assad's forces and sometimes against each other.
But Turkey has long castigated Washington for its military relationship with the YPG. Ankara regards the YPG an extension of the PKK, a Kurdish armed group that has waged an insurgency in southeast Turkey for over three decades.
"We don't think the Turks ought to undertake military action that's not fully coordinated with and agreed to by the United States at a minimum," Bolton said, "so they don't endanger our troops, but also so that they meet the president's requirement that the Syrian opposition forces that have fought with us are not endangered."
The YPG has indicated that it might seek a deal with Damascus after the U.S. forces have gone.
Bolton, who will travel to Turkey on Monday, said the United States would talk to Ankara to find out what its objectives and capabilities were.
Erdogan's spokesman Ibrahim Kalin said Turkey's targets were the YPG, the PKK and Islamic State.
"One aim of Turkey's fight against the PKK and its Syrian extensions is to rescue the Kurds from the cruelty and oppression of this terrorist group," state-owned Anadolu news agency quoted Kalin as saying, in comments that emerged after Bolton made his remarks.
"Turkey will continue decisively its efforts to end the war, provide security, and implement the process of political transition without discriminating between our Syrian brothers on the basis of religion, ethnicity or sect," Kalin said.
In Washington on Sunday, Trump reiterated that the United States would be pulling its troops out of Syria but suggested the move might not happen soon.
"I never said we are doing it that quickly. But we are decimating ISIS," Trump told reporters.
Later on Sunday Bolton met with Israeli Prime Minister Benjamin Netanyahu and reassured Israel and other allies of the United States' commitment to their security. (Additional reporting by Daren Butler in Istanbul and Jeffrey Heller in Jerusalem; Editing by Angus MacSwan and Kevin Liffey)