Composition of the Atmosphere extended definition. The atmosphere contains many gases, most in small amounts, including some pollutants and greenhouse gases. The most abundant gas in the atmosphere is nitrogen, with oxygen second. Argon, an inert gas, is the third most abundant gas in the atmosphere.
(CNN)Iran has completed the necessary steps in a deal to restrict its nuclear program, meaning international economic sanctions are lifted, officials from the EU and the U.N. nuclear watchdog agency said Saturday. Relations between Iran and the IAEA now enter a new phase.
Sanctions Against Iraq. The UN Security Council imposed comprehensive economic sanctions against Iraq on August 6, 1990, just after the Iraqi invasion of Kuwait. When the coalition war had ousted Iraq from Kuwait the following year, the Council did not lift the sanctions, keeping them in place as leverage to press for Iraqi disarmament and other goals.