The United Kingdom re-committed to centering its strategic nuclear deterrent on ballistic submarines equipped with Trident missiles in a government report released Tuesday. The report, called the Trident Alternatives Review, effectively upheld a posture outlined in a 2010 strategic defense review. The alternatives report was commissioned amid a disagreement between the governing Conservatives and coalition junior partner Liberal Democrats, who are skeptical about proceeding with plans to recapitalize the ballistic missile submarine fleet. A Royal Navy Vanguard-class ballistic missile submarine.…