Former U.S. Ambassador to Russia John Sullivan leaves after a closed hearing before the Senate Foreign Relations Committee at the U.S. Capitol in Washington, D.C.
07 December 2022, Saxony, Freiberg: Two employees work in crystal growth at Freiberg-based Compound Materials GmbH. Gallium arsenide wafers for microelectronics and optoelectronics are produced here. These are used for high-frequency components for 4G/5G communication or are used in LEDs or lasers. Photo: Jan Woitas/dpa (Photo by Jan Woitas/picture alliance via Getty Images)