President Moon Jae-in will be sitting down with former UN secretary general Ban Ki-moon later in the afternoon... to talk about ways to tackle the country's ultra-fine dust crisis.<br />The top office offered Ban the role of heading a national committee on the matter last weekend,... which Ban accepted. <br />He told the presidential chief of staff that he was pleased to help,... but is also concerned that he might not be able to meet the public's expectations.<br />The leader of the minor opposition Bareunmirae Party first proposed this month to form the committee. <br />