Explanation:

- Option 1: Ukraine

Ukraine has significantly increased its international presence, especially after 2014, but it has not chaired this committee.

- Option 2: Israel

Israel was elected for the first time to chair the UN’s legal affairs committee. It was a significant achievement, highlighting Israel's expanding role in international diplomacy and law.

- Option 3: Uruguay

Uruguay is known for its active participation in international organizations, but it wasn't elected to lead the legal affairs committee of the UN.

- Option 4: Senegal

Senegal is influential in various UN initiatives, particularly in Africa, but hasn't chaired this committee recently.

- Option 5: Sweden

Sweden plays a crucial role in global diplomacy but has not been in the news for chairing this specific UN committee.