LONDON — Russia demonstrated on Tuesday that one response to fielding an unwelcome question is to ask a different question. And another, and another, and many more after that.

The Organization for the Prohibition of Chemical Weapons is meeting in The Hague to decide whether to start determining who was to blame for chemical weapons attacks, rather than just saying whether they occurred.

The change, proposed by Britain, is clearly aimed at Russia and its ally, Syria, two countries recently accused of using chemical weapons, which they deny. Both oppose the measure.

But before it could take up the merits of the proposal, the organization spent hours batting down questions and objections from the Russian delegation — and, to a lesser extent, from representatives of Syria and its other main ally, Iran — about how a vote would be conducted. That vote is expected to take place on Wednesday.