Read the dictionary definition of interpose. All definitions for this word.
1. to insert between other elements
1. She interjected clever remarks
2. introduce
1. God interposed death
3. be or come between
1. An interposing thicket blocked their way
4. get involved, so as to alter or hinder an action, or through force or threat of force
1. Why did the U.S. not intervene earlier in WW II?