At their joint news conference, Mr.Obama also talked about efforts to control the spread of nuclear weapons - an issue that is topping the agenda for his discussions here with Russian President Dmitri Medvedev.

VOA: standard.2009.04.01

The most urgent question is control of weapons, which has yet to be worked out between the two parties.

ECONOMIST: But there are deep misgivings

The White House said that it was not entirely clear who was in control of the weapons, leaving open the possibility that the attacks were accidental or unauthorized.

NEWYORKER: The Thin Red Line

Second, the republics have already stated their willingess to cooperate in the control of nuclear weapons.... I don't think we should exaggerate this fear, and I don't think that we should be blackmailed by the threat.

CENTERFORSECURITYPOLICY: Center For Security Policy