Russia's Federal Security Service (FSB) said on Tuesday it had opened a criminal case against exiled businessman Mikhail Khodorkovsky and other prominent Kremlin critics, accusing them of plotting to violently seize power. The FSB said it was investigating all 22 members of the Russian Antiwar Committee- a group of politicians, business people, journalists, lawyers, artists and academics all based outside the country, who oppose Russia's war in Ukraine. Apart from Khodorkovsky, the group includes prominent dissident Vladimir Kara-Murza, former world chess champion Garry Kasparov and ex-prime minister Mikhail Kasyanov. The FSB statement referred to the group as "Khodorkovsky and his accomplices," implying it saw him as the main figure. The move came less than two weeks after the Parliamentary Assembly...