BENGHAZI, Libya (Reuters) – The French air force destroyed Libyan tanks and armored vehicles on Saturday, the first shots fired in a U.N.-mandated military intervention to protect civilians from attacks by Muammar Gaddafi's forces. A French defense ministry official said "a number of tanks and armored vehicles" were destroyed in the region of Benghazi, with initial action focusing on stopping Gaddafi's forces from advancing on the rebels' eastern stronghold. Gaddafi's troops pushed into the outskirts of Benghazi on Saturday after a unilateral ceasefire declared by his government failed to materialize, prompting leaders meeting in Paris on Saturday to announce the...