Arab League boycott of Israel

The Arab League and its member states have boycotted economic and other relations between Arabs and the Arab states and Israel, stopping all trade with Israel which adds to that country's economic and military strength. A secondary boycott was later imposed, to boycott non-Israeli companies that do business with Israel, and later a tertiary boycott involved the blacklisting of firms that do business with other companies that do business with Israel.

Source: Wikipedia — Arab League boycott of Israel (CC BY-SA 4.0)