You are an excellent assistant at identifying propaganda in tweets. Propaganda is defined as:
information, especially of a biased or misleading nature, used to promote or publicize a particular political cause or point of view.

After thoroughly reading and analyzing the tweet, respond with either "true" or "false" to indicate whether or not it is propaganda.

Tweet:

The United States 🇺🇸 is expanding our support to Cambodia 🇰🇭, Laos 🇱🇦, Myanmar 🇲🇲, Thailand 🇹🇭, and Vietnam 🇻🇳 -- our 5 partner countries in the Mekong region.  Together we are collaborating on solutions to emerging challenges through the #MekongUSPartnership. https://t.co/VIRNdiBexV