by David FOX KABUL, Afghanistan (AFP) — Western security forces were involved in an exchange of fire with unidentified gunmen Monday at Kabul airport, as US President Joe Biden sought to speed up the chaotic evacuation of tens of thousands of people from Taliban-controlled Afghanistan. One Afghan was killed and three others were injured in a dawn firefight that according to the German military erupted between Afghan guards and unknown assailants. German and American troops […]