BERLIN (AP) — Israel's Ministry of Defense says it has signed the contract for a sixth Dolphin-type military submarine from Germany.Ehud Barak's office said the minister signed the contract Wednesday in Berlin at a ceremony held at the Israeli ambassador's home.Germany's Parliament approved the purchase in November and agreed to pay some €135 million ($180 million) of the costs — about 1/3 of the submarine's price.Israel already has three Dolphin submarines from Germany — one half-funded and two entirely funded by Berlin — and two more are currently under construction.Barack said in a statement the submarine will "substantially increase the capabilities and the strength of ...