According to the United Nations’ Article 51, a member state can defend itself following an armed attack until the Security Council steps in.
Iran foreign minister
Foreign Minister of Iran Mohammad Javad Zarif dismissed talks with Washington in a tweet late Tuesday, saying "threats, sanctions and PR stunts won’t work". Responding to US President Donald Trump’s surprise offer of talks without preconditions, Zarif wrote: "Iran & US had two years of talks. With EU/E3+Russia+China, we produced a unique multilateral accord — the JCPOA (nuclear deal). It’s been working. US can only blame itself for pulling out and leaving the table.…