President Trump defends Syria strike tactics via Twitter

President Trump took to Twitter on Saturday to defend the U.S. military's tactical approach that excluded runways as a target during Thursday's missile strikes on a Syrian air base.

SEE ALSO: Trump congratulates US military for 'the Syria attack'

"The reason you don't generally hit runways is that they are easy and inexpensive to quickly fix (fill in and top)!" tweeted the president hours after praising the military for representing the United States "so well" in the Syrian operation.

Following a chemical weapons attack on the Syrian people, President Trump ordered the firing of 59 Tomahawk cruise missiles on the Shayrat airfield in Syria.

See images from the attack:

Some questioned the president and the U.S. military's tactics after reports emerged that the Assad regime had resumed launching airstrikes from the U.S. targeted air base.

Two Syrian jets reportedly took off from the Shayrat airbase a day after being hit by U.S. missiles, according to the Syrian Observatory for Human Rights.

U.S. ambassador to the United Nations Nikki Haley called the attack "a very measured step" and said the United States is "prepared to do more" in Syria.

Trump also sent a letter to Congress on Saturday explaining his decision to carry out the military action.

"I acted in the vital national security and foreign policy interests of the United States, pursuant to my constitutional authority to conduct foreign relations and as Commander in Chief and Chief Executive," wrote Trump.