Lead Nations (LNs) are responsible to: - conduct either partially or totally the HN tasks and responsibilities set out above, when acting as a HN; - when acting as a SN for multinational headquarters groups and/or units with a high degree of multinationality, fulfil all the respective M & T tasks set out above; - as required, take the lead i n performing specific M & T tasks as identified by NATO in co-operation with the nations; and - establish arrangements for compensation and/or reimbursement for those LN functions with all parties involved. [LOG-HB]