DUBAI, United Arab Emirates (AP) — Iran held annual military drills with Russia as a second American aircraft carrier drew closer to the Middle East. Both the United States and Iran are signaling they are prepared for war if talks on Tehran’s nuclear program fizzle out. President Donald Trump said Thursday he believes 10 to 15 days is enough time for Iran to reach a deal. But talks on its nuclear program have been deadlocked for years, and Iran has refused to discuss wider U.S. and Israeli demands that it scale back its missile program and sever ties to armed groups. Indirect talks held in recent weeks made little visible progress, and one or both sides could be buying time for final war preparations.