Planes Taking Off From Syrian Airfield Despite U.S. Strikes; Assad Allies Say Attack 'Crossed Red Lines'

New footage from a Syrian airfield has been released showing warplanes on the runway and taking off after the base was blasted by 59 Tomahawk missiles Thursday night.

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The footage, released over the weekend, came as Russia, Iran and the militant group Hezbollah, who all back the Syrian dictatorship, issued a joint statement accusing the U.S. of crossing a "red line" and saying, “From now on, we will respond with force to any aggressor. America knows our ability to respond well."

Sen. John McCain (R-Arizona) says the U.S. attack should have been more thorough.

"The president’s action was very important, but now we better follow it up, and by the way, we should have cratered the runways," McCain said on Face the Nation Sunday.

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Following McCain’s appearance, the president tweeted: "The reason you don't generally hit runways is that they are easy and inexpensive to quickly fix (fill in and top)!"

"The United States took a very measured step last night. We are prepared to do more, but we hope that will not be necessary," U.S. ambassador to the United Nations, Nikki Haley, said Friday.

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