Look up 'be to + infinitive' online. If the title were a proper sentence, it would read 'The trade ministers are to meet [...]'. It is quite common to abbreviate in this way in titles, though. This probably contains the best answer to your question: http://www.bbc.co.uk/worldservice/learningenglish/grammar/learnit/learnitv103.shtml => The be to + infinitive structure is also frequently used in newspaper, radio and television reports to refer to future events. It expresses near certainty that what is forecast will happen.

Thanks for a correction)

Hi Vladimir: Here is a suggestion for your question: This is the title of an article that I found on the Net ("Net" is an abbreviation of "Internet" and this is a proper noun, so it must be capitalized.). I have no idea why the words are written in this order. Thanks!