Answer:
Option 3 is the answer - Do not have to be approved by the senate
Step-by-step explanation:
In executive agreement, two or more heads of nations come together to form these agreements that are politically binding. They are not like treaties formally drafted as an international agreement or pact between sovereign states and international organisations that would require the advice and approvals of two-thirds of the senate before it can be effective (as seen in the U.S ).