PRAGUE—The Czech Republic said on Monday Russia’s eviction of 20 Czech embassy employees in response to Prague’s expulsion of 18 Russian staff was a stronger than expected reaction and the government will consider further steps. Acting Czech Foreign Minister Jan Hamacek said he had asked fellow European Union foreign ministers for “an expression of solidarity” at a video conference on Monday. “I expect that also on the basis of this…, we will learn about more expressions of support and it will be up to member states if they add some concrete decisions.” The central European country ordered the Russian diplomats out on Saturday, saying it suspected Russian intelligence was involved in explosions at an ammunition depot in October and December 2014. “The reaction (by Russia) is stronger than we had expected, it is more diplomats than the number of intelligence officers we expelled,” Hamacek told a televised news conference. “I …