Trump defends decision not to hit runway on Syrian air base

They're "easy and inexpensive to quickly fix," he said.

"The reason you don't generally hit runways is that they are easy and inexpensive to quickly fix (fill in and top)!" the commander-in-chief tweeted.

Earlier today, Trump congratulated the armed forces "for representing the United States, and the world, so well in the Syria attack."

The president ordered the airstrike just two days after a suspected chemical weapons attack killed at least 86 people, including women and children, in Syria's Idlib Province.

"No child of God should ever suffer such horror," he added.

According to U.S. officials, symptoms exhibited by victims suggested they suffered the effects of sarin gas, a banned nerve agent. The Syrian government denied carrying out the chemical attack.

The U.S. also accused the Assad regime of deploying Sarin in an August 2013 attack that killed more than 1,400 people. At the time, then-President Obama, saying the regime had crossed a "red line," threatened targeted military intervention, but later backed off after a deal to dismantle Syria's chemical weapons program was struck.

On Friday, U.S. ambassador to the U.N. Nikki Haley told an emergency meeting of the Security Counsel that the United States "is prepared to do more, but we hope that will not be necessary."

ABC News' Luis Martinez and Alex Mallin contributed to this report.