The diplomacy “window” is about to get “smaller” U.S. President Barack Obama said, on Wednesday , referring to Iran. Iran is suspected by the Untied States and the international community of building a nuclear weapon covered up by a civilian nuclear program.

“The window that allows the solving of this issue diplomatically is about to get smaller” Barack Obama said during joint press conference with British prime minister David Cameron in Washington.

The U.S. is trying to pressure Iran to sit at the negotiations tablet to avoid the scenario of a Israeli attack on Iran’s nuclear installations.

Hillary Clinton asked the boss of Russia’s diplomacy, Serghei Lavrov, to inform Iran that negotiations are Iran’s last change to avoid a war.

“The negotiations in April between Iran and six international mediators are Iran’s last change to avoid war” Hillary Clinton said.

These negotiations might take place at the beginning of April in Turkey.