Britain and America launched massive airstrikes against more than a dozen sites used by Iranian-backed Houthi rebels in Yemen overnight. The action involved warship and submarine-launched Tomahawk missiles, and fighter jets, officials confirmed. Britain’s military said its destroyer in the region HMS Diamond conducted a “carefully coordinated strike to reduce the Houthis’ capability to violate international law” after they damaged a number of merchant ships, and targeted military vessels, in recent weeks. The UK said that four Cyprus-based Typhoon aircraft used Paveway guided bombs to strike t…