WASHINGTON (AP) — President Donald Trump considers himself an effective dealmaker but appears to have hit a wall with Iran. His tough talk, threats and even military action have failed to move Tehran from its long-established positions. Trump has insisted that Iran is ready to reach an agreement in the wake of escalating U.S. threats. But he once again backed down, saying he had put plans for an imminent resumption of attacks on hold. There’s no evidence that Iran is set to meet Trump’s demands, and its chokehold on the Strait of Hormuz gives it a big bargaining chip. The impact on the key oil shipping corridor has raised gasoline prices in the U.S.