Complete the following sentence: Syria wants the return of the Golan Heights, while Israel has maintained a policy of "land for peace" based on Resolution 242. ••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••
Conferencia de Madrid de 1991. ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️ While serious progress was made, they were unsuccessful.