Prime Minister Benjamin Netanyahu said Israel will defend itself “alone,” if necessary, after Washington threatened to withhold further arms should Israeli troops begin a large-scale push into the southern Gaza Strip city of Rafah. “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 the White House said it would restrict arms supplies in the case of a broader attack on Rafah. Israeli operations in Rafah are so far mainly limited to the east of city, where…