Mexican Revolution revolution was in 1914, during the "Ypiranga" incident. When United States intelligence agents received word that the "Ypiranga", a German merchant ship, contained illegal firepower for Huerta, President Wilson ordered American troops to the port of Veracruz to stop the ship from docking. Wilson never actually declared war on Mexico. The United States skirmished with Huerta's troops in Veracruz. The "Ypiranga" successfully docked at another port and unloaded the arms, which greatly angered Wilson. The ABC Powers arbitrated and U.S. troops left Mexican soil, but the incident added to already tense Mexican-American relations. In 1916, in retaliation for Pancho Villa's
Foreign involvement in the Syrian Civil War to conclude at the end of August that "the US was on the verge of military strikes against the Assad regime". Nevertheless, the president opted not to strike. The decision disappointed some within the US political establishment. During September 2013, it was reported by US officials that under "a covert CIA program," small arms and anti tank weapons had begun reaching some moderate rebel groups. Although Free Syrian Army Commander Salim Idris denied receiving lethal aid, some analysts commented that information on US arms may not have reached Idris due to poor communications as the Free Syrian Army command was