EU, Latin American and Caribbean leaders will meet for the first time in eight years. Free trade and climate change are on EU-CELAC summit agenda.
The European Commission hopes that pushing ahead long-brewing trade deals with Latin American governments can boost the EU.
As Honduras contemplates switching diplomatic allegiance from Taiwan to China, experts say unofficial ties with remaining allies are stable but it's important to maintain formal relations, amid pressure from Beijing.
The second "surveillance balloon" announcement comes after the first sighting prompted the top US diplomat to postpone a trip to Beijing. China claims the balloons are used for scientific purposes.
China said the device deviated from its route, and "accidentally strayed over Latin America and the Caribbean." This comes even as the US is seaching for the remains of the suspected surveillence balloon it shot down.