US President Donald Trump will announce on Tuesday his decision on whether to remain or quit the 2015 Iran nuclear deal. In a tweet Monday, Trump said: "I will be announcing my decision on the Iran Deal tomorrow from the White House at 2:00pm." Initially set for May 12, the decision will be revealed on May 8 at 1800 GMT. Trump has threatened to withdraw from the deal, which provided Iran with relief from sanctions in exchange for limiting its uranium enrichment capacity, unless European signatories to the accord fix what he has called its shortcomings. He has however been facing intense pressure from European allies not to do so. Earlier on Monday, British Foreign Secretary Boris Johnson appealed once more to Trump not to scrap the nuclear deal, saying that while the president has a "legitimate point" over "flaws" in the accord, the global community has no better alternative. German Foreign Minister Heiko Maas warned that the accords collapse could spark "an escalation" in the region and stressed that Washingtons key European allies remain convinced saving it "makes the world a safer place". His French counterpart Jean-Yves Le Drian, on a Berlin visit, said that the agreement is "the right way to stop Iran from getting access to nuclear weapons" and "will save us from nuclear proliferation". Iranian President Hassan Rouhani said Iran would be willing not to abandon the nuclear deal even if the United States pulls out, providing the European Union offers guarantees that Iran would keep benefiting from the accord. Earlier Monday, Trump criticized John Kerry after reports that the former secretary of state has been promoting the Iran nuclear deal. Trump said on Twitter: "The United States does not need John Kerrys possibly illegal Shadow Diplomacy on the very badly negotiated Iran Deal. He was the one that created this MESS in the first place!" Kerry, who was also the lead negotiators for the Obama administration on the Paris climate accord, has been promoting both agreements since he left office. The Boston Globe reported Friday that Kerry, the lead negotiator on the deal for the Obama administration, had been privately meeting with foreign officials to strategize on how to keep the US in the deal. Kerry has met with Irans Foreign Minister Mohammad Javad Zarif and at least one of their meetings was at a public event in Oslo, Norway in June of 2017, where they sat on the same panel with EU foreign policy chief Federica Mogherini and extolled the virtues of the nuclear deal.