OREANDA-NEWS. Fitch Ratings has assigned 'AAA' Long-term ratings to the following Series 2018 Variable Rate MuniFund Term Preferred Shares (VMTP Shares) issued by two Nuveen municipal closed-end funds:

Nuveen Municipal High Income Opportunity Fund (NMZ)
--\\$87,000,000 of VMTP Shares Series 2018, term redemption on Aug. 1, 2018, rated 'AAA'.

Nuveen Intermediate Duration Municipal Term Fund (NID)
--\\$175,000,000 of VMTP Shares Series 2018, term redemption on Aug. 1, 2018, rated 'AAA'.

The funds are managed by Nuveen Fund Advisors, LLC (NFA) and subadvised by Nuveen Asset Management, LLC (NAM). The VMTP Shares were issued in connection with the exchange offers described below.

KEY RATING DRIVERS

The 'AAA' long-term ratings of the Series 2018 VMTP Shares primarily reflect:

--Sufficient asset coverage provided to the Series 2018 VMTP Shares as calculated per the over-collateralization (OC) tests of NMZ and NID;
--The structural protections afforded by mandatory de-leveraging provisions in the event of asset coverage declines;
--The legal and regulatory parameters that govern the operations of NMZ and NID;
--The capabilities of NFA as investment advisor and NAM as subadvisor.

THE EXCHANGE OFFERS

On July 1, NMZ and NID each issued Series 2018 VMTP Shares in exchange for all outstanding Series 2016 and (solely with respect to NMZ) 2016#1 VMTP Shares. After the exchange, the outstanding Series 2016 and 2016#1 VMTP Shares will be marked as Paid in Full by Fitch.

FUND LEVERAGE
As of May 29, 2015, NMZ had approximately \\$997.2 million in assets. Total leverage on a pro forma basis, consists of \\$87 million of newly issued Series 2018 VMTP Shares, and \\$225.3 million of tender option bond (TOB) obligations.

As of May 29, 2015, 2015, NID had approximately \\$1 billion in assets. Total leverage on a pro forma basis, consists of \\$175 million of newly issued Series 2018 VMTP Shares, and \\$185.1 million of TOB obligations.

ASSET COVERAGE
As of May 29, 2015, the total pro forma asset coverage ratio for the above noted VMTP Shares of NMZ and NID, as calculated in accordance with the Investment Company Act of 1940 (the 1940 Act), was in excess of the minimum asset coverage threshold of 225% currently set by the terms of the preferred shares.

As of May 29, 2015, the pro forma effective leverage ratio including the impact of the VMTP issuance was 31.3% for NMZ and 35.9% for NID. These effective leverage ratios are below the 45% maximum effective leverage ratio allowed by the governing documents of the VMTP Shares.

STRUCTURAL PROTECTIONS
In the event of asset coverage declines, the governing documents of each series of VMTP Shares require the funds to reduce leverage in order to restore compliance with the applicable asset coverage test. Compliance with both the minimum asset coverage threshold and the 45% maximum effective leverage ratio threshold is tested daily.

Failure to cure a breach of the minimum asset coverage threshold by the allotted cure date would result in mandatory redemption of sufficient preferred shares of the fund to restore compliance. To facilitate redemption, the fund will deposit sufficient funds with a third-party redemption agent. Failure to cure a breach of the 45% maximum effective leverage ratio by the allotted cure date requires a fund to restore compliance by depositing enough funds with a third-party redemption agent to redeem a sufficient number of preferred shares and / or by reducing the amount of TOBs the fund has outstanding in an amount sufficient to restore compliance.

For the 2018 VMTP Shares of each fund, the total market value exposure periods (i.e. the pre-specified time period allotted for valuation, cure and redemption in the event of a breach) for the minimum asset coverage and maximum effective leverage ratio tests are within the 60 business day guidelines provided in Fitch's criteria.

STRESS TESTS
Fitch performed various stress tests on the funds in order to assess the strength of the structural protections available to the preferred shares compared to the stresses outlined in Fitch's closed-end fund rating criteria. These tests included determining various 'worst case' scenarios where the funds' leverage and portfolio composition migrated to the outer limits of their operating and investment guidelines.

Only under certain circumstances, such as increasing the funds' state and sector concentration, while simultaneously migrating the portfolios to a mix of 50% long-term 'BBB' 10+ years to maturity bonds and 50% high yield bonds, did the asset coverage available to the VMTP Shares fall below the 'AAA' threshold, and instead passed at an 'AA' rating level.

Given the unlikely nature of the stress scenarios, and the minimal rating impact, Fitch views the funds' permitted investments, municipal issuer diversification framework and mandatory deleveraging mechanisms as consistent with an 'AAA' rating.

FUND PROFILE
NMZ and NID are closed-end management investment companies regulated by the 1940 Act. Each fund invests in municipal securities that are exempt from regular federal income tax and each fund may invest up to 50% of assets in below investment grade and/or unrated securities. NID has a 10-year term and intends to liquidated and distribute its then-current net assets to shareholders on or before March 31, 2023.

THE ADVISORS
The investment advisor for the funds is NFA, a subsidiary of Nuveen Investments. NFA is responsible for each fund's overall investment strategies and their implementation. The subadvisor, NAM, is a subsidiary of NFA that oversees the day-to-day operations of the funds. Nuveen Investments and its affiliates had approximately \\$233 billion of assets under management as of March 31, 2015.

RATING SENSITIVITIES
The ratings assigned to the 2018 VMTP Shares of each fund may be sensitive to material changes in the leverage composition, portfolio credit quality or market risk of the funds, as described above. A material adverse deviation from Fitch guidelines for any key rating driver could cause a ratings downgrade.

Each fund has the ability to assume economic leverage through derivative transactions which may not be captured by the minimum asset coverage test or effective leverage ratio. The funds do not currently engage in speculative derivative activity and do not envision engaging in material amounts of such activity in the future. In fact, such activity is limited by the funds' investment guidelines and could run counter to their investment objective of achieving tax-exempt income. Material derivative exposures in the future could have potential negative rating implications if they adversely affect asset coverage available to rated preferred shares.