Chinese-made MANPADS could significantly complicate future U.S. and Israeli air operations over Iran, according to new analysis. Reports suggest portable QW-12 and FN-16 air-defense missile systems may soon reach Tehran, increasing the threat to low-flying fighter jets, helicopters and close-support aircraft. While they cannot replace Iran's damaged integrated air-defense network, analysts warn these shoulder-fired missiles could force major tactical changes in any future conflict. Watch the latest update on Iran, China, U.S., Israel, Chinese MANPADS, Iran air defense, Middle East tensions, and military analysis.