The Mercosur signal

The agreement between the EU and Mercosur has entered a new phase. On February 26, 2026, Uruguay became the first Mercosur country to formally ratify the agreement, followed hours later by Argentina. After 25 years of negotiations and a political conclusion announced in 2024 in Montevideo, the focus is no longer on the text but on the speed of ratifications. South America knows what it wants and is moving forward with the implementation of the agreement. The House of Representatives in Uruguay approved the treaty with 91 votes in favor out of 93, after it had been approved by the Senate. In Argentina, the agreement was ratified with 69 votes in favor and 3 against. Brazil and Paraguay, for their part, are moving forward with their internal processes with a pragmatic logic of ensuring preferential access to the world's largest market before the global context changes again. Mercosur is sending a signal of unusual strategic consensus. In Brussels, the agreement faces a double institutional dimension. The trade pillar requires a qualified majority in the Council (achieved in January) and the approval of the European Parliament. The latter requested an opinion from the EU Court of Justice, which is delaying the legislative timetable. The European Commission argued that, once the formal procedures have been completed and at least one ratification in Mercosur has been finalized, the trade chapter will enter into provisional application. This was announced by European Commission President Ursula von der Leyen following ratification by Uruguay and Argentina, stating that “when you are ready, we are ready,” indicating that the agreement will enter into provisional application. The underlying discussion in Europe no longer revolves exclusively around tariff liberalization. Environmental clauses have become the minimum standard for legitimizing the agreement. From a geopolitical perspective, 2026 appears to be a key year. For the European Union, the agreement with Mercosur represents diversification of supply chains, access to critical raw materials, and regulatory consolidation in the face of China's advances and US industrial policy. For Mercosur, it represents regulatory predictability, investment, and access to a market of more than 440 million people. There is also a sensitive variable, that of geographical indications. More than 350 European products are protected under the agreement. Any regulatory divergence could strain support in the European Parliament. But it could also accelerate Brussels' willingness to first set its standards through the interregional agreement. The cost of inaction is high for both sides. If the EU fails to conclude its largest interregional agreement in a context of global trade fragmentation, its strategic credibility will be weakened. If Mercosur delays, it runs the risk of being caught between powers that negotiate bilaterally from asymmetrical positions. The rapid ratification by Uruguay and Argentina and the prompt response from Europe have reshaped the scenario. It is no longer a question of whether the agreement is desirable in the abstract, but rather who will take the lead in bringing it to fruition. In a world where trade rules are being redefined in real time, the window of opportunity is open and the message from Mercosur is clear: we want to move forward. Now the strategic decision lies with Brussels.