As A country with country B, two countries will benefit but the country itself. A country that is not a member. The FTA will be pushed. Called to discourage trade.
For example, country A to country B will benefit the two countries, but countries outside the EU. The country is not a member FTA will be sidelined. Known as a trade barrier
As the country A with country B two countries will benefit, but the country outside the country that is not a member. Free trade zone will be extracted. It's called a protectionist trade.