ISLAMABAD : President Dr Arif Alvi says united approach by all pillars of state is significant in nation building and in taking the country towards right direction. In an interview with a private news television channel, he said collective efforts by parliament, judiciary, executive and media on issues, including elimination of corruption and rule of law, are important for positive results. The president said a strong nation will emerge when all the stakeholders will put in their efforts together. He said corruption existed at many levels in the society from top to bottom and would end gradually with effective counter steps. The corruption at top tier, however, had reduced significantly under the government of Prime Minister Imran Khan as he took actions on merit, even against his own party members. Arif Alvi said the credibility of PTI government improved following its two years of governance that witnessed improvement in socio-economic conditions.