Carlos Solar, senior researcher in Latin American security at the think tank Royal United Services Institute in London, believes that the last week will force Lula to reconsider how he has related to the conflict. "He has to think again after this. He does not convince the Ukrainians at all," says Solar. For now, he does not believe that Brazil will be accepted by Kyiv as a neutral negotiator. Nevertheless, there are not many other countries that can obviously assume that role. "Most of Europe supports Ukraine, and there are not many countries that can be a credible peace broker. So maybe Lula is right that it could be Brazil," he says. Solar himself believes that it is more likely that Brazil can play a role as a "guarantor" in the eventual peace negotiations rather than taking on the role of a mediator.