Rubuta ci gaba don wannan sakin layi - Ehn ya wakilci Sweden a gasar zakarun duniya na U18 na 2014 na IIHF, inda ya yi rikodin taimako uku a wasanni bakwai. Daga baya Ehn ya wakilci Sweden a Gasar Hockey ta Junior ta Duniya ta 2015
, inda ya yi rikodin tallafi biyu a wasanni bakwai. Ehn ya wakilci Sweden a Gasar Hockey ta Junior ta Duniya ta 2016, inda ya zira kwallaye daya da taimako daya a wasanni bakwai.