Russia strongly protested the move to take down the Communist monument.
Nils Usakovs has been using the positive test for publicity.
EU leaders have given Russia a veto over the future political and economic direction of Eastern Europe.
Experts say that the last minute clamp down is too little too late.
Angela Merkel says Grexit must be prevented while Varoufakis writes that disagreements with creditors are "not unbridgeable".
Eurogroup says Athens's reforms are too optimistic, urges Greece to tackle issues of pensions and labour markets.
The project, which involves a Ukrainian tank positioned outside the National Library, awaits approval from Riga's pro-Russian mayor.
Officials in the Baltics are calling for higher NATO vigilance as Russia steps up drills.