military,deadliest,projectiles,projectile motion,military submarine,submarine,submarines,top 10,top 5,best,list,10 most,most,interesting,facts,poseidon,russian navy,usa navy,navy,us navy,virginia class,submariner,royal navy,iran,news,us defense,virginia class submarine,us iran tensions,soleimani,tehran,politics,missile,missiles,deadliest missiles