Smerel, there’s a good reason for that – nobody, not satmar, brisk, neturei karta in yerushalayim, or the rest of the Torah world, which are anti-Zionist, has ever said that israel should surrender to the Arabs, because of the very reason you said. It will cost Jewish lives – this is a part of why zionism is bad, that it costs Jewish lives.
There isn’t a safe way out of the distress that the zionists put us in. The satmar rov in the early days of the state said it should be given to the UN, and the brisker rov said they should give back everything in 1948, but that was then – in today’s situation, not a single gadol or talmid chacham will say that Israel has that option.
The only people who go around saying that are the fanatical, USand UK based neturei karta, which stole the name of a group of yerushalmi yidden who were just more outspoken against zionism than others and were opposed to dealing with the government.