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Waiver of defences
The obligations of each Guarantor under this Clause 18 will not be affected by an act,
omission, matter or thing which, but for this Clause, would reduce, release or
prejudice any of its obligations under this Clause 18 (without limitation and whether or
not known to it or any Finance Party) including:
(a) any time, waiver or consent granted to, or composition with, any Obligor or
other person;
(b) the release of any other Obligor or any other person under the terms of any
composition or arrangement with any creditor of any member of the Group;
(c) the taking, variation, compromise, exchange, renewal or release of, or refusal
or neglect to perfect, take up or enforce, any rights against, or security over
assets of, any Obligor or other person or any non-presentation or nonobservance
of any formality or other requirement in respect of any instrument
or any failure to realise the full value of any security;
(d) any incapacity or lack of power, authority or legal personality of or
dissolution or change in the members or status of an Obligor or any other
person;
(e) any amendment, novation, supplement, extension, restatement (however
fundamental and whether or not more onerous) or replacement of any Finance
Document or any other document or security including without limitation any
change in the purpose of, any extension of or any increase in any facility or
the addition of any new facility under any Finance Document or other
document or security;
(f) any unenforceability, illegality or invalidity of any obligation of any person
under any Finance Document or any other document or security; or
(g) any insolvency or similar proceedings.

Deferral of Guarantors' rights
Until all amounts which may be or become payable by the Obligors under or in
connection with the Finance Documents have been irrevocably paid in full and unless
the Agent otherwise directs, no Guarantor will exercise any rights which it may have
by reason of performance by it of its obligations under the Finance Documents or by
reason of any amount being payable, or liability arising, under this Clause 18:
(a) to be indemnified by an Obligor;
(b) to claim any contribution from any other guarantor of any Obligor's
obligations under the Finance Documents;
(c) to take the benefit (in whole or in part and whether by way of subrogation or
otherwise) of any rights of the Finance Parties under the Finance Documents
or of any other guarantee or security taken pursuant to, or in connection with,
the Finance Documents by any Finance Party;
(d) to bring legal or other proceedings for an order requiring any Obligor to make
any payment, or perform any obligation, in respect of which any Guarantor
has given a guarantee, undertaking or indemnity under Clause 18.1
(Guarantee and Indemnity);
(e) to exercise any right of set-off against any Obligor; and/or
(f) to claim or prove as a creditor of any Obligor in competition with any Finance
Party.

В сообщении имелся в виду другой вейвер. Я специально привел сами клозы. Такие положения часто используются в гарантиях, поручительствах и договорах залогах.
Насколько эти положения работают по российскому праву?