In Brexit warm up, Dutch voters to consider EU treaty with Ukraine

The Netherlands' King Willem-Alexander (L) meets European Commission President Jean-Claude Juncker at the European Commission headquarters in Brussels, Belgium November 3, 2015. REUTERS/Eric Vidal

AMSTERDAM (Reuters) - Dutch voters will decide on Wednesday whether to support a European treaty deepening ties with Ukraine in a referendum that will test sentiment towards Brussels ahead of Britain's June Brexit vote and could also bring a boost for Russia.

The broad political, trade and defence treaty is already provisionally in place but has to be ratified by all 28 European Union member states for every part of it to have full legal force. The Netherlands is the only country that has not done so.