Iran’s severely injured supreme leader remained defiant Thursday as he vowed to protect the Islamic Republic’s nuclear and missile capabilities — warning that America’s only place in the Gulf was “at the bottom of its waters.” Ayatollah Mojtaba Khamenei, who has yet to be seen since becoming the supreme leader following his father’s death, issued another statement via state media rejecting President Trump’s peace terms and the American naval blockade on Iran’s ports. “Ninety million proud and honorable Iranians inside and outside the country regard all of Iran’s identity-based, spiritual, human, scientific, industrial and technological capacities — from nanotechnology and...