Washington is now Summit.
New York is accustomed to see these landings of heads of state, every fall for the UN General Assembly.
But 47 leaders on the banks of the Potomac? Washington has never seen anything like it. Not since the San Francisco Conference in April 1945 (UN Foundation), to see so many heads of state gathered at the invitation of U.S. President (Roosevelt was, but he died just Truman before the conference and has maintained).

In 1945, Poland could not come. The organizers had left a place on the document. She later signed and is counted among the 51 founding members of the UN.
On Tuesday, the Washington Summit observed a minute's silence for Poland. The Prime Minister was to come. He was replaced by the Minister of Foreign Affairs.
     
What Roosevelt did, Barack Obama can do it again.
A major international conference, so. On the most important topic that is, nuclear. But by the back door. They will pretend to ignore Iran and we can talk "weapons security" means the place where one keeps his bombs, how many locks etc ....

In the words of Robert Gates, the defense minister, is quite extraordinary to have managed to bring many people to discuss a subject as unexciting.
   - “It's an extraordinary Achievement to Bring So Many People to talk about this subject ".

    The Americans are quite happy to have succeeded in engaging the Chinese president.
It remains a mystery. The Chinese, who pretended to be angry, have suddenly decided that it was not worth the trouble.
After a phone call from one hour between Obama and Hu, they decided to participate, both in Washington and the UN (where they discuss the upcoming penalties against Iran).
They have agreed to make for flexibility in their currency. Barack Obama, himself, has postponed the report on the "manipulation" of the yuan which was due April 15.

China is a member of the P5 is the most discreet about its atomic weapons. The only one to have adopted the position declaratory called "No first use"They promise not to use nuclear weapons first.

A report the think tank Institute Project 2049, the Chinese keep their weapons in a network of tunnels under the mountains Taibai in the center of the country. They move constantly (to avoid a first strike).

The Chinese weapon, says this document is based on a "Quantitative ambiguity and geographical“.