Iraq
The Fertile Crescent was mostly in Iraq but also portions of Iran, Turkey, Syria, Lebanon, Jordan, Israel, and Palestine.
Syria, Iraq, Lebanon.
The Fertile Crescent is in the current countries of Iraq, Syria, Lebanon, Israel/Palestine, and Jordan.
The Fertile Crescent is in southwest Asia.
The Fertile Crescent is in the modern-day countries of Israel, Palestine, Lebanon, Jordan, Syria, and Iraq.
Iraq
Israel and America
No one country occupies the entire crescent. The fertile crescent stretched from the Nile River to Mesopotamia. Thus the countries that make up that area today include Egypt, Israel, Lebanon, Syria, Iraq and Kuwait. You might be able to make an argumant for Iran as well.
The modern-day countries that occupy the Fertile Crescent are Iraq, Syria, Lebanon, Jordan, and Israel/Palestine.
The fertile crescent arches from Iraq, over to Syria, Lebanon, Jordan, Israel/Palestine, down to Egypt.
Mesopotamia occupies a third of the fertile crescent, the easternmost third to be exact. It extends from the end of the Persian Gulf up through Syria and then down through Palestine almost to Egypt. It is crescent shaped. There is a desert between the two legs.