Prime Minister Benjamin Netanyahu says Israel will defend itself alone if necessary amid growing international criticism of the war in Gaza. “If we have to stand alone, we will stand alone,” he said in a video message released on Thursday. He said Israel would fight “with our fingernails” to win, in his first public statement after Washington said it would restrict arms supplies in the case of a broader attack on Rafah. Netanyahu referred to the Israeli War of Independence of 1948, saying Israel had won even without weapons. Now, he said, Israel is much stronger and is united in its aim to def…