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:

We are deeply saddened by the tragic news of the Ukraine International Airlines flight crash near #Tehran. Our thoughts are with the families of the victims – citizens of #Afghanistan, #Canada, #Germany, #Iran, #Sweden, #Ukraine and the #UnitedKingdom. https://t.co/4fWZ7y3Kap