Hungary expelled 10 Russian diplomats on Tuesday, saying they had acted in ways incompatible with their diplomatic status, in a stark reminder that the pro-Russian years of former prime minister Viktor Orban are over. Russia’s foreign ministry said it would retaliate and its response would be painful for Hungary, local media reported. “The response to the Russophobic lobby in Budapest will be harsh and painful,” said foreign ministry spokeswoman Maria Zakharova. Orban, swept from power in...