A woman runs past the government building, decorated with European Union and Moldovan flags in Chisinau, Moldova, on May 31, ...

EU flags (Jonathan Brady / PA). The UK has sanctioned a “pro-Kremlin operation” that attempted to rig Moldova’s EU referendum, the Foreign, Commonwealth and Development Office has said.

Now, the EU is more than doubling that in a reflection of what EU diplomats told me was the vulnerable situation Moldova is under with an increasingly belligerent and active Russia putting ...