Politics makes strange bedfellows, so they say. International politics makes the strangest.

Exclusive: Israel buys 2 new submarines from Germany | Jerusalem Post:
"... a warming in German-Israel ties. In 2005, the countries agreed for the first time to hold joint ground maneuvers. In June, the INS Eilat missile ship participated for the first time in a NATO exercise in the Black Sea, together with German Navy."

Israel and Germany have announced the expansion of the former's nuclear weapons delivery systems with the addition of two more German-made submarines to Israel's fleet.

While the subs have other uses - conventionally-armed missiles, coastal patrol, espionage, etc. - their main value is as a platform for nuclear-armed cruise missiles which would survive another power's first-strike on Israel and can be used to retaliate against any country in the region which might be so foolish as to make such an attack on Israel or to take revenge on other nations which may not have helped sufficiently to protect Israel. Call them Israel's doomsday device.