US sounds alarm over Russia's plan to send fighter jets, helicopters to Iran   Russia has reportedly agreed to send advanced fighter jets and attack helicopters to Iran in a deal that will provide a significant boost to the country's air force, state media reports. The agreement, which marks the first time Tehran has purchased fighter aircraft since the 1990s, has raised alarms in the United States over the deepening defense cooperation between Moscow and Tehran. The finalised plans include the delivery of Su-35 fighter jets, Mil Mi-28 attack helicopters, and Yakovlev Yak-130...