The United States and Russia maintain diplomatic and trade relations.
Answer: The verb tack means to attach, add, or change course. As a noun, tack refers to a small nail, the direction of a ship, or a course of action.
Give me some choices if choice are not there
Then it is Unexpected in the blank
The correct answer is claim.
A claim is any statement or point of view a person might take on a particular argument. If you agree with one side of an argument, it means that you have a claim when it comes to that side. For example, if you are pro abortion, your claim is that abortion should be legal.