An explosion rocked Kharkiv this afternoon. An air raid alert has been declared in the city and region, according to Kharkiv Mayor Ihor Terekhov and the head of the Kharkiv Regional Military Administration Oleh Syniehubov. The air alert was announced more than an hour and a half ago. The mayor said that it was loud in Kharkiv for the second time in a day. “We are investigating whether it is a hit in the city or the suburbs. Be careful,” Terekhov added. Earlier, the Ukrainian Air Force reported the launch of guided aerial bombs in the Kharkiv region. Where Russian troops hit Terekhov said that …