America knows Pakistan's reservations and will not leave Pakistan alone in the war on terror, the United States envoy for Pakistan and Afghanistan Richard Holbrooke said here on Wednesday. During a joint press conference with Pakistani Foreign Minister Shah Mahmood Qureshi, the U.S. special envoy said that U.S. Secretary of State Hillary Clinton will soon visit Pakistan to address Pakistan's concerns and participate in strategic level talks probably at the end of February, he said. Holbrooke, who is on his three-day visit to Pakistan, announced 1 billion U.S. dollars aid for Pakistan's energy sector. He said that the U.S. and Pakistan soon would have an agreement on the investment. Trade Transit Agreement would also come into reality between the two countries, he added. Holbrooke said that 'Pakistani people have shown reservation over the new American policy of body screening system', adding that sometimes friends also disagree with each other on some issues but they solve those issues with negotiations. He further said that the scanning laws are not discriminatory to the people of any country including Pakistan, but are for strengthening security in the U.S.. Qureshi said that Pakistan could play a better role in reconstruction of Afghanistan, adding that Pakistan could also provide training to Afghan police and army. He said that Pakistan has made it clear to the U.S. that drone attacks on its territory will undermine relations between the two countries. He noted that the U.S. drone attacks are causing anger in the Pakistani population. 'Pakistan feels that the expansion in these attacks will undermine our relationship and there is also a perception in Pakistan that despite our very good relations, the United States has not paid sufficient attention to Pakistan's security concerns', said the foreign minister. According to local media reports, Holbrooke met Pakistani Prime Minister Yousaf Raza Gilani and the foreign minister, discussing issues of mutual interests. 