Washington, April 1 (Reuters): U.S. President Donald Trump told the nation in a ‌televised speech on Wednesday night that the U.S. military had nearly accomplished its goals in Iran, but he declined to offer a concrete timeline for winding down the conflict. Facing a war-wary American public, sliding approval ratings and pressure from some allies to outline his war aims in ​more precise and consistent terms, Trump said the U.S. had destroyed Iran’s navy and air force, and crippled ​its ballistic missile and nuclear programs. He added that the U.S. would continue to hit targets in ⁠the Islamic Republic over