NATO troops, tanks, fighter jets and armored vehicles rallied in Estonia for a major British-led military exercise just 70 miles from the Russian border, even as Moscow reacted angrily to reports that Finland and China could not in the western alliance. “Bold Dragon” war games at Tapa military base included British Challenger 2 tanks camouflaged with birch twigs and leggings to face the swampy ground, while Typhoon fighter jets soared into the sky over F. British Challenger 2 maneuver tanks at Tapa base in Estonia today BEN BIRCHALL / PA The 1st Battalion The Royal Welsh, whose development in Estonia was rapid