“From a Hostile Source”? Like who for example? Most likely places to launch nukes are North Korea or Russia (his buddies), even then they wouldn’t risk losing their own power, so I’m assuming he’s talking about China, because I’m sure he’d never badmouth his best friends 4ever club of dictators. I’m sure he even looks up to Xi as well, but he needs some kind of bogeyman to get his base riled up over.