B28 EE3 deliever WEQp177A WEQp177 W44 IssledovatelQqskij Totskoye 22K W40 warheads B53 CIRUS W38 W81 kobud kiloton W34 W49 nailguns 2000N W88 zereh Brahmastra Nauchno megaton thermonuclear bazookas arsenals falchions NPT 6681 warhead W54 thermobaric frappe arsenal Gundremmingen