These words come from a bulletin about planned talks involving Russia, Ukraine, and the United States.

A bulletin is a short news report or announcement.

These words come from a bulletin about planned talks involving Russia, Ukraine, and the United States.

Talks are planned discussions between people or groups.

These words come from a bulletin about planned talks involving Russia, Ukraine, and the United States.

Here, “involving” means including these countries as participants.

You heard “mediated” in the news.

Here, “mediated” describes a role in helping people or groups hold talks.

For example: A community leader mediated a discussion between two neighbors.

The leader helped the neighbors have their discussion.

Here, it means helped by a third party who brings people together for talks.

A third party is someone outside the two sides who helps them talk.

You heard “format” in the news.

Here, “format” means the way something is arranged.

For example: The team chose a small-group format for its planning meeting.

A small-group format means the meeting was arranged for people to work in small groups.