Turkish President Tayyip Erdogan said on Friday the United States' decision to arm the Syrian Kurdish YPG is contrary to its relationship with Turkey, adding he believed issues with Washington would be largely solved in an upcoming visit. Erdogan, who was speaking at a news conference in the capital Ankara, also said he would pursue the issue of the extradition of the U.S.-based cleric Fethullah Gulen to "the end". Erdogan is due to meet with President Donald Trump during a visit to Washington next week. The issues of arming the YPG, which Turkey sees as a terrorist organization, and the extradition of Gulen, whom Ankara blames for last year's coup, are expected to be high on the agenda.