Intelligence Chiefs Warn of Russian Troops Near Ukraine and Other Threats Officials said that China’s push for global power posed a threat to the United States, and they dwelled on climate change, domestic extremism and more. William J. Burns, the C.I.A. director, center, and Avril B. Haines, the director of national intelligence, warned Congress of threats from Russia and China on Wednesday.Credit...Pool photo by Saul Loeb April 14, 2021Updated 7:16 p.m. ET WASHINGTON — The Russian military buildup at the Ukraine border and in Crimea could provide enough forces for a limited military inc...