The United States is urging China stop its 'provocative' military flights near Taiwan after the communist country sent about 100 military planes, some of them capable of dropping nuclear bombs, into the island's air defense zone over the weekend. Taiwan's defense ministry said that China's air force sent 39 aircraft to the zone just on Saturday, the highest reported number to date. They were a mixture of J-16 and Su-30 fighters as well as anti-submarine and early warning aircraft, Taiwan says. Friday's flights included nuclear-capable H-6 bombers, although it is unclear if they were armed with warheads. 'The United States…