Potash prices have climbed to decade highs as state-owned Belaruskali, the second-largest producer after Nutrien NTR.TO, copes with U.S. and European sanctions that have forced Belarus to divert shipments away from a key Lithuanian port. Climbing prices have increased farmers' costs and contributed to food inflation. In an interview, Seitz said he will gauge how long Belarus may face sanctions based on how President Alexander Lukashenko deals with the West as economic pressure builds on the country.