MEXICO CITY, Feb. 25 (Xinhua) -- Mexican President Andres Manuel Lopez Obrador on Monday resumed his call for dialogue in Venezuela to resolve the political crisis between the ruling socialist party and the U.S.-backed right-wing opposition.

"I believe dialogue is the best thing. The best thing would be to move away from the temptation to use force, to seek a diplomatic solution," he said during his daily press conference.

His made the remarks following a tense standoff over the weekend at Venezuelan border crossings, as trucks which were said to be carrying U.S. humanitarian aid attempted to enter the country with the help of anti-government protesters.

The push to take delivery of the unauthorized shipments led to isolated clashes between security forces and supporters of the right-wing opposition led by Juan Guaido, a legislative leader who declared himself "interim president" in January.

The United States on Monday imposed sanctions on four Venezuelan governors of border states for not allowing the aid to get through.

The sanctions came on top of other economic and financial sanctions that have cut off the country's access to foreign capital and its own funds abroad, likely worsening the shortages of food and medicine that the humanitarian aid allegedly aims to alleviate.

"It's very clear to us that a peaceful and negotiated solution must be found," said Lopez Obrador.

"We don't want violence anywhere. We advocate nonviolence," he added.

Mexico is one of the few Latin American countries which maintain a position of non-intervention in Venezuela's internal affairs, and it will continue to do so, said Lopez Obrador.