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:

Ambassador Zhang Jun: China is committed to playing a constructive role in maintaining peace and stability in the Middle East and the Gulf. https://t.co/h321XWvtTU https://t.co/jyt2l3nEKv