Lionel Messi is unsure if he will continue playing for Argentina beyond the World Cup.
The 30-year-old briefly stepped away from the Albiceleste in 2016 and is considering bringing a permanent close to an international career that began in 2005.
His long stint in the national team has been marked with near misses including a defeat to Germany in the 2014 World Cup decider and back-to-back final failures at the Copa America.
"I don't know. It will depend how we do, how it ends," the star attacker told Sport.
"The fact we've lost three finals now has led to some complicated moments with the Argentine press due to the differences in seeing what it means to reach a final.
"It is not easy and [reaching three finals] has to be appreciated. It's true that winning them is important, but getting there is not easy."
However, he insists Jorge Sampaoli's side have nothing to fear in Russia.
"There are a lot of very good players but we also have quality players that any national team would want. We don't envy anyone," the skipper added.