Israeli Prime Minister Benjamin Netanyahu has repeated his insistence that there can be no return to Israel’s “indefensible” 1967 borders.
He was speaking to the US pro-Israel lobby, Aipac, on the eve of an address to the US Congress.
Mr Netanyahu and President Barack Obama have clashed over the issue recently.
Mr Obama has said the border of a future Palestinian state should be based on the 1967 lines, but modified to include land swaps with Israel.
Israel occupied the West Bank, East Jerusalem, the Gaza Strip and the Golan Heights in the 1967 Six Day War.
It is the pre-war borders that the Palestinians seek to map out a future state.