A monk uses his Flurry of Blows abilityfeature and tries to snatch a wand from an enemy caster.
We model this using the disarmDisarm rules (DMG, p. 271):
A creature can use a weapon attack to knock a weapon or another item from a target's grasp. The attacker makes an attack roll contested by the target's Strength (Athletics) check or Dexterity (Acrobatics) check. If the attacker wins the contest, the attack causes no damage or other ill effect, but the defender drops the item.
We noticed the text says "A creature can use a weapon attack...". Does a monk's unarmed strike count as a weapon attack for this purpose?