US president says no preconditions for talks with Tehran but won't allow them to have nuclear weapons; US military was 'cocked and loaded' to retaliate for downing of drone

Diplomats say closed-door meeting to happen Monday after Trump cancels strike on Iran at last moment because it was not a 'proportionate' response

President says US was 'cocked and loaded' to retaliate against Iran for downing an American drone and ready to hit 3 different sites, when he called it off

Head of IRGC aerospace force says army deliberately avoided targeting jet that accompanied drone, claims 2 warnings were given before UAV was destroyed

FAA bars American-registered aircraft from flying over airspace, citing 'potential for miscalculation or misidentification'; several top global companies follow suite

The US president is said to have urged Tehran to come to the table, warning of impending US military action; Iranian officials say they conveyed the matter to Khamenei

Democrats have derided the administration for an incoherent strategy they say is escalating tensions. But the president's allies insist everything is going exactly as planned

US official says military was making preparations to strike radars, missile batteries in response to drone's destruction, when approval was abruptly withdrawn

Overtures for talks by Trump have little chance of yielding results, putting countries on potentially disastrous collision course, though some see peaceful ways out of standoff

Britain, France, Germany, China, Russia and Iran to convene June 28 in Vienna in bid to stem unraveling of 2015 accord, amid rising tensions between Tehran and Washington

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