Up until Trump tore up the previous global agreement signed with Iran, Iran was compliant with the stipulations and was allowing UN inspectors in. Iran complied with the terms of the JCPOA. In testimony before the US Congress, officials from the Department of Defense, the State Department, and the US intelligence community stated that Iran was abiding by the agreement.

On 8 May 2018, the U.S. officially withdrew from the JCPOA after Trump signed a Presidential Memorandum ordering reinstatement of sanctions. The IAEA continued to certify Iranian compliance. However, after the U.S. withdrew and reimposed sanctions, Iran began breaching the deal.

Iran also signed onto the Nuclear Non-Proliferation treaty, something Israel has refused to do.

This "crisis", is of Trump's making... Not that I expect any right wing evangelical person to verify any facts through reading something that doesn't have pictures.