Can you correct this sentence, please

[Pity]

Can you please comment on the "Since diplomatic relations between Georgia and Germany has been established in 1992,..." part of the sentence below:
"Since diplomatic relations between Georgia and Germany has been established in 1992, soon after Georgia gained its second independence, Germany has always actively supported Georgia in its endeavors to build a democratic country."
Do you think that the tense is used correctly in the sentence? I personally believe that this should be "Since diplomatic relations between Georgia and Germany was established in 1992,..." I would be greateful if you also comment on other mistakes in this sentence.

Thanks beforehand

[Guest]

First,were established but not wasEverything seems quite right to meThe use of the present perfect at the beginning of the sentence is used by intention to stress the fact of establishment.

[Alan]

Hi Pity,

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