Definite article with job position and name

This is one of the banners that one might have spotted in Minsk, Belarus these days:

It says "WARM GREETINGS TO PRESIDENT OF THE REPUBLIC OF INDIA PRANAB MUKHERJEE"

Several non-native speakers had an argument on Facebook about grammatical correctness of the subject and specifically if it's absolutely necessary to put a definite article between "TO" and "PRESIDENT" or not. One of the counterparts claims that the cases that were found on (1, 2) are not really applicable to this case as none of them puts "President of (country)" and a name that follows job position into a single sentence, so I'd like to ask about this specific one.

Is this banner OK or "the" is missing?