President George W. Bush said that "all options are on the table" to prevent Iran from developing atomic weapons, but said he will continue to focus on the international diplomatic option to persuade Tehran to drop its nuclear ambitions. Bush also said there should be a unified effort involving countries "who recognize the danger of Iran having a nuclear weapon," and he noted that US officials are working closely with nations such as Great Britain, France and Germany on the issue." "We want to solve this issue diplomatically and we're working hard to do so," Bush told reporters Tuesday in the Rose Garden. As Bush spoke, diplomats from six countries converged in Moscow to map out the next step toward solving the Iranian nuclear standoff. The United States and Britain say that if Iran does not comply with the UN Security Council's April 28 deadline to stop uranium enrichment, they will seek a resolution that would make the demand compulsory but Russia and China remain wary of sanctions.