Rubuta ci gaba ga wannan sakin layi - Ehn ya wakilci Sweden a gasar zakarun duniya na 2014 na IIHF U18
, inda ya yi rikodin tallafi uku a wasanni bakwai. Daga baya Ehn ya wakilci Sweden a Gasar Kofin Duniya na Junior Ice Hockey ta 2015, inda ya yi rikodin taimako 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.