By bne Tehran bureau The Middle East is grappling with a heatwave of unprecedented intensity as temperatures in Iraq and Iran have soared to nearly 50°C (122°F), causing a series of electricity failures across the region as people prepare to make the most significant movement for the annual Arba’een pilgrimage in Iraq. This extreme weather event is not only causing immediate discomfort and danger but is also raising alarming questions about the region’s future habitability in the face of accelerating climate change as both countries struggle to deal with the ongoing onslaught of hot weather. I…