new delhi, April 21 -- This isn't the first time that Pakistanis are unsure whether they should celebrate their government's achievements or berate it for its failures. The country seems to be at the centre of attempts to bring peace to West Asia, and is likely to host another round of talks between the US and Iran this week. But it's also sweltering under hours of power cuts - driven in large part by a shortage of liquefied natural gas from the Gulf, but also because of poor decision-making by officials. The government has promised that power cuts wouldn't last longer than two or three hours a day; but last week, at least, they seemed to have crossed that, with the country as a whole reporting a shortfall of 4,500 megawatts of electricity ...