The treaty required that construction of the line be finished within four years.

An example is when international treaties require control of a substance.

Any treaty will require approval from two-thirds of the Senate.

Moreover, we do not yet have the necessary legal basis that our treaty requires for this.

Instead the treaty requires nations to institute programs to reduce emissions.

The treaty would require participants to eliminate all chemical weapons within 10 years.

The treaty also requires that the importing country mark the weapons.

This proposed treaty would have required that "all activities in space be conducted exclusively by states."

American officials say the Russians are reducing their overall number of weapons as the treaty requires.