Commercial treaties and diplomatic alliances were forged with China and the Persian Empire.
One company has its own helicopters, and several have even forged diplomatic alliances with local clans.
The pact of mutual support fostered a strong diplomatic alliance between the two countries (and was still valid and applicable as of 2009).
The marriage was a diplomatic alliance.
During the later stages of the Spring and Autumn period, Zheng frequently switched its diplomatic alliances.
Another fascinating angle is that you will need to form diplomatic alliances with other races in order to further your goals.
The planet had never affiliated itself with any political or diplomatic alliance.
Washington has been too willing to downplay democracy and human rights for the sake of access to natural resources or diplomatic alliances.
The Treaty of Windsor is the oldest diplomatic alliance in the world which is still in force.
The alliance has been called "the first nonideological diplomatic alliance of its kind between a Christian and non-Christian empire".