VARNA, Bulgaria (Reuters) - Bulgaria pledged to make up for delays in connecting its gas network with neighboring Balkan countries and hopes to have links with neighboring Greece and Turkey by the end of next year, the economy and energy minister said on Sunday. A new gas development plan of the state network operator Bulgartransgaz earlier on Sunday revealed it expected a one year delay in the project until the end of 2014, but Dobrev said the operator was being too conservative. "Bulgartransgaz presented only a plan. ...