Description:U.S. Vice President Joe Biden arrived in Turkey on Thursday in a visit coinciding with growing international pressure on Syria to halt a military crackdown on popular protests. Biden previously visited Iraq, where he said the U.S. troop withdrawal from Iraq by the end of the year opened a new phase in relations between the two countries, including a robust security partnership. Biden is also expected to discuss Turkey's strained relations with Israel and Ankara's fight against the Kurdish PKK.(1:19)